Physics
The splitting of different colours of light in a prism is :

Refraction of light
Diffraction of light
Reflection of light
Disperson of light

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Physics
A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that

Both suffer the same change in momentum
The rubber ball suffers greater change in momentum
The metal ball suffers greater change in momentum
The initial momentum of the rubber ball is greater than that of the metal ball

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